Bantam Books

First published in hardback by Random House in August 1957. This paperback edition published by Bantam (1927) in March 1959.

First published in hardback by M.S. Mill Co. in 1958. This paperback edition published by Bantam (1974) in July 1959. Cover art by Barye Phillips.

Originally published by E.P. Dutton & Co. (hardback) in 1959. This paperback edition published by Bantam (A2028) in January 1960. Cover art is not credited, though there is a faint signature in the bottom left corner (Stan Zuckerberg perhaps?).

First published in hardback by E.P. Dutton & Co. in 1959. This paperback edition published by Bantam (A2247) is dated September 1961. Cover art is not credited.

Published by Bantam (J2484) in November 1962, though the four novelettes originally appeared between 1955 and 1960. Cover art by Mitchell Hooks.